The InQuizitor app combines question and answer sessions with gameplay rewards. It only costs £1.79.

Special offer – now only 59p!

They say:

“InQuizitor helps you game your way to exam success. Play curriculum based quizzes combined with some challenging mini games to make your study time a lot more fun and effective. Win bonuses by answering quickly and correctly, earn more game time and watch your scores increase as you hardwire vital exam information into your brain.”

As I watched Comic Relief on Friday, I realised 4CH31 had raised enough to restore the sight of a child and pay for another child to attend primary school for a whole year. 1CH42 raised enough to pay for two children to go to primary school for the next year. Well done. Read about Chep and Sunday here:

Higher chemistry candidates’ responses to practical test questions (or PPAs) were “very poorly done” last year, suggesting some of them had “no experience” of various experiments.

The assessors commented: “In some centres, the benefits of effective teaching and learning with respect to PPAs were clearly evident, with large numbers of candidates producing very sharply focused answers; in other centres, however, many answers still suggest that the candidates have absolutely no experience of the PPA.”

Schools were also advised to do more to prepare Higher pupils for problem- solving questions and those which required more detailed explanations. Candidates could also improve their grade through “more attention to the rote-learning of the chemical knowledge on the course”.

Pupils were also reminded of the need to use their calculators correctly, especially if brackets were involved.

The “E.N.D.” they refer to is electronegativity difference. If the difference in elcetronegativity is very small or zero, then you have a pure covalent bond. As the difference in elctrongativity increases, the bond gets more polar (e.g. HCl, ΔE.N. = 0.9) until you end up with pure ionic bonding (e.g. NaCl, ΔE.N. = 2.1).

Everything that was on the old website is in new site. If you can’t see the F1, F2, Standard Grade, Higher tabs, you just have to Sign in first (top right of page). Same log-in and password as for logging on computers in school. Then click on your course and then all you need is available in the Shared Documents folder.

Even if you are not a pupil, feel free to browse the links and you may find the chemistry revision pages useful. I’m happy for you to share any of my posts on Facebook – you’ll need to click on the post to open it first and then you’ll see a Share this: Facebook button. Don’t use the one below – it just shares this About post.